With the addition of Moulinglacia coupled with Raiza and Spiritual Water Art - Aoi frogs have the power to gain massive hand advantage and stagger the opponents progress. The problem with frog decks, at least for me, has always been their speed, the tribute summon is slow, but with Rank 2 and 3 XYZs and even Synchros, frogs gain massive speed and even have potential for a few OTKs.

I side Gorz and Trag, I didn't put out my side because that is subject to change with your play style, game 1 you want to rip their hand and go for game early, Gorz and Trag are too defensive for the main, in my opinion. Dupe is at 3 and Treeborn is at 2 because they are fuel for Ronintoadin, this deck originally featured the Sea Lancer engine but that proved to be too slow for the goal. The idea here was to think outside the realm of regular frog decks, Treeborn is not your tribute fodder, you only have 3 tribute monsters, he is food. Dupe is not a searcher,though he does function as 1 to get Swap, he is food. Ronin faccilitates most of your rank 2 plays and functions as the "Gravekeeper" if you will to allow Moulinglacia to always be live mid to late game.

So many feel that Gorz is Defensive, in reality it's actually aggressive, able to turn the game around from an almost assured loss into a win from a losing position is too good a reason to not run Gorz.
At the very least I would take out 1 Birdman to fit it in.

No need to make this Deck go over 40 cards.

I like the ability to use Moulinglace so easily although the Game 1 match-up against Darkworlds must REALLY hurt!!!

Do you Side LaDD at all??? For game 2 if needed for match-ups of course.

I guess I can cut a Birdman for Gorz, I see that Gorz is offensive in nature but anything that clogs my main engine hurts, all of this decks OTKs require 3 cards most of the time, such as: Swap Frog, TGU, Ronin.